From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,T_DKIMWL_WL_HIGH,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0AE9DC468BD for ; Sat, 8 Jun 2019 11:43:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CF5BE216FD for ; Sat, 8 Jun 2019 11:43:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559994211; bh=QqwbVvg7oCYi/X4AobtxoBfM99XkLtwtSgDkCsX3Yik=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=KXNJn6SNNNGKOwkr8WQXo/8HiuTQ1Op+MEaBNxDW3bwCWbsQvDhcZnZjusX91WhwN M14UiRvQgJXHJTrqsWWjgAkVBCWdBbhS4H+DACisfRnqaw3M0RU+4dhWZWGcP9HXF+ ZHcZ70aXc3VcHXa+0eCs2S1id++g6L7hnaNq/cVc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728768AbfFHLna (ORCPT ); Sat, 8 Jun 2019 07:43:30 -0400 Received: from mail.kernel.org ([198.145.29.99]:60766 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728733AbfFHLnZ (ORCPT ); Sat, 8 Jun 2019 07:43:25 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2202821530; Sat, 8 Jun 2019 11:43:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559994204; bh=QqwbVvg7oCYi/X4AobtxoBfM99XkLtwtSgDkCsX3Yik=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=T/exYECLGPm+jn7vvA8ut7LpscLKz1JnTqXlx77w4x2KsgjoSxongkvV2EB1Y/R2s NRu2/FSNV6L+7yHFUi0YDF802S3GeeEun5JiIFnbbyzmR9zp44UH+2aIziKxxa9oV+ VqQucRwTZjElhs58tA6dYyZwxV1ybI3FIUtt53Hk= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Biao Huang , "David S . Miller" , Sasha Levin , netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 18/49] net: stmmac: update rx tail pointer register to fix rx dma hang issue. Date: Sat, 8 Jun 2019 07:41:59 -0400 Message-Id: <20190608114232.8731-18-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190608114232.8731-1-sashal@kernel.org> References: <20190608114232.8731-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Biao Huang [ Upstream commit 4523a5611526709ec9b4e2574f1bb7818212651e ] Currently we will not update the receive descriptor tail pointer in stmmac_rx_refill. Rx dma will think no available descriptors and stop once received packets exceed DMA_RX_SIZE, so that the rx only test will fail. Update the receive tail pointer in stmmac_rx_refill to add more descriptors to the rx channel, so packets can be received continually Fixes: 54139cf3bb33 ("net: stmmac: adding multiple buffers for rx") Signed-off-by: Biao Huang Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 50c00822b2d8..45e64d71a93f 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -3319,6 +3319,7 @@ static inline void stmmac_rx_refill(struct stmmac_priv *priv, u32 queue) entry = STMMAC_GET_ENTRY(entry, DMA_RX_SIZE); } rx_q->dirty_rx = entry; + stmmac_set_rx_tail_ptr(priv, priv->ioaddr, rx_q->rx_tail_addr, queue); } /** -- 2.20.1